Doorlock



June 9, 1925.

W. H. D ARDENNE DO ORLOCK Filed Oct. 9, 1922 Patented June 9, 1925.

umrnn sTA'rEs PATENT QFFICE.

WALTER H. DARDENNE, 0F LAWNDALE, PENNSYLVANIA, ASSIGNOR TO HEINTZMANUFACTURING COMPANY, OF PHILADELPHIA, PENNSYLVANIA, A. CORPORA- TIONOF PENNSYLVANIA.

DOORLOCK.

Application filed. October a, 1922. Serial ire/593,179.

To all whom it may concern:

Be it known that T, WALTER H. DAn DENNE, a citizen of the United States,residing at Lawndale, in the city and county of Philadelphia, State ofPennsylvania, have invented certain new and useful Tmprovements inDoorlocks, of which the following is a specification.

This invention relates to door locks, and more particularly to looks fordoors of vehicles.

The usual construction of locks for automobile doors and the likecomprises a spring pressed latch which slides back and forth across thecrack of the door and into and out of a keeper recess in the door post.The springs being metallic deteriorate with use and age and are apt tostop functioning. The weaving of the door is apt to force the latch outof the socket recess and allows the door 'to fly open at inopportune'times. This is especially apt to occur after a certain extent of use,since use results in the wearing of a bevel at the locking edge of thelatch. In addition to a lock one or more separate bufiers are attachedto the door or door post, which very often interfere with the easyclosing and locking of the door. These locks are not always easy toopen, since the springs very often become stubborn or displaced.

One of the aims of my invention is to provide a lock for doors, such asautomobile doors and the like, which improves upon prior constructions.Another object of my invention is to provide a combination door lock andbuffer, thereby eliminating the necessity of using separate bufiers. Another object of my igvention is to provide a lock which avoids the useof the usual metallic spring and its attendant disadvantages while atthe same time operates automatically to lock the door when it is closed,holds the door securely locked so that the door cannot fly open as aresult of weavin and may readily and easily be unlooked y a simplemanual operation. A further object of my invention is to provide a lockof the above character which is simple, durable and inexpensive inconstruction, eificient in operation, and one which may be assembled,attached in place, and operated readily and easily. Other objects willbe in part obvious and in part pointed out hereinafter.

In accordance with my invention, instead of providing a lock having alatch which is movable across the crack of the door to engage within akeeper recess in the door post, my lock comprises two complementaryplvoted latch members, neither of which extends across the door crack,simultaneously movable into and outof locking engagement with a keeperflange which is secured to the door post and extends across the doorcrack for engagement with the latches. The latches are yieldingly heldin looking position by a resilient pad, which also acts as a buffer.This pad is positioned to be struck by the keeper flange and to becompressed thereby when the door is closed to prevent noise and rattle.

Tn order that a clearer understanding of my invention may be had,attention is here by directed to" the accompanying drawings forming apart of this application and illustrating one possible embodiment of myinvention.

Referring to the drawings, Fig. 1 is a diagrammatic sectional viewshowing a lock embodying my invention attached to an automobile door;Fig. 2' is a plan View of the latch mechanism mounted on a door, and istaken on the line 22 of Fig. 3, the dot and dash lines indicating theunlocking position of the latch levers and the keeper being shown insection; Fig. 3 is a rear plan View of the lock; and Fig. 4 is ahorizontal sectional view of the lock, and is taken on the line l4 ofFig. 2.

Referring to the drawings, 1 indicates a door which is hinged at oneside, as at 2, to a door post 3, and at the opposite side has a framemember 4 which carries latch mechanism 5 of the look. A door post 6adjaoent the door member 4 carries the end of which overlaps the rearside of the 1 outer end of upwardly extending arm 15 of lever 11. Theend of arm rests against a resilient pad 16 of rubber or similarmaterial, which is carried by the casing 8, and which yieldingly holdsthe latches 10 and 11 in locking position. The keeper of this lock has aflange 17 secured to the door posts 6, as by means of screws or bolts18, and has a vertical flange 19, at'right angles to the flange 17,extending across the door crack. The central portion of flange 19 ispositioned to be struck by buffer fingers 20, provided latch 11. Theouter end of arm 23 is prefrecesses 22 and 25 thereof.

erably extended upwardly to form a suitable handle 27 for operating thelock.

In the preferred form, the casing of the lock is a channel shaped memberhaving an angular recess along one edge. The bottom wall 28 of thisrecess has a central perforation 29 through which the bufi'er fin ers 20of the pad 16 extend, pad 16 pre erably being also provided withprojecting shoulders 30 which engage against the rear surface of theperforated wall to prevent the pad from falling through the opening. Arm

23 of lever 10 extends through a suitable perforation 31 in the wall 28,and arm 26 of lever 11 projects through a suitable slot 32 in the wall.

The operation of the lock is as follows Resilient pad 16 constantlypresses against arm 15 and yieldingly holds both latches in lockingposition, and, when the door is closed, keeper flange 19 is heldsecurely locked between the latches with its edges in At the same timebufl'er fingers 20 of pad 16 are compressed against flange 19, therebyholding the door against rattling. When the door is being closed, keeperflange 19 wedges or cams the latch levers 23 and 26 apiart against thepressure of pad 16 until the edges of the keeper flange are opposite thelocking recesses, whereupon the resilient pad 16 causes the latch leversto snap automatically into locking engagement with the edges of keeperflange 19. Meanwhile, as the door is closed, bufler fingers 20 of thepad 16 strike the central portion of the keeper flange 19, and act as abufler for the door. To open the 'door it is only necessary to push thehandle "extends approximately the full width of pad 16 to. provide amore extended bearing against the rear of pad 16.

From the above, it will be apparent that my lock is simple and durablein construction and comparatively noiseless in operation. The firmclamping of the keeper flange between the two latch levers entirely,avoids the possibility of the door springing open on account of theweaving thereof. The objectionable features attending the use ofmetallic springs are entirely avoided, and on account of the bufferelement of the lock mechanism, the necessity of providing one or moreseparate buffers for the door is eliminated. The lock is easy toassemble, mount and operate. Many other advantages of my improved lockwill be apparent to those familiar with this art.

As many changes could be made in the above construction and manyapparently widely different embodiments of this invention could be madewithout departin from the scope thereof, it is intended that a l mattercontained in the above description or shown in the accompanying drawingsshall be interpreted as illustrative and not in a limiting sense.

What I claim is 1. In a lock of the character described, the combinationof a latch movable into and out of locking position, keeper'means forsaid latch, and means, comprising a pad of resilient material, forholding said latch in looking position, said pad also constituting abuffer.

2. In a lock of the character described, in

combination, a casing, two spaced, opposed latch arms mounted on saidcasing for movement into and out of locking position, a buffer pad ofresilient material mounted on said casing intermediate said latch arms,and a keeper having edge portions positioned to engage with said latcharms and havin a central ortion positioned to strike agaihst said bu erpad. Y 3. In a lock of the character described, in combination, acasing, latch mechanism thereon, comprising two opposed bell cranklevers, one arm of each lever being a latch arm and the other arms ofsaid levers over lapping each other, and a pad of resilient materialmounted on said casing intermediate said latch arms and directly infront of said overlapping arms, whereby said overlapping arms areresiliently restrained against forward movement and said latch arms aremaintained resiliently, in locking position.

4. In a lock of the character described, in combination, a casing, latchmechanism thereon, comprising two opposed bell crank levers, one arm ofeach lever being a latch arm and the other arm of said leversoverlapping each other, a pad of resilient material mounted on saidcasing intermediate said latch arms and directly in front of saidoverlapping arms, whereby said latch arms are maintained resiliently inlocking position, a keeper for the latch mechanism, and said pad havingforwardly exposed resilient portions, constituting a bufi'er for saidkeeper. 7

5. In a lock of the character described,- in combination, a casing, alatch mechanism thereon, comprising an upper latch and a lower latch,each in the form of a bell crank lever, and separately pivoted on saidcasing,

said lower latch having an upwardly ex tending arm resting at its outerend against the back of a resilient pad carried by said casing, theupper latch having a downwardly extending arm at its end resting againstthe back of said upwardly extend- I- ing arm, a keeper, said upper latchhaving another arm movable into and out of locking engagement With saidkeeper, said lower latch having another arm movable lIltO and out oflocking engagement with said keeper,

said pad being positioned to yieldingly hold v WALTER H. DARDENNE.

